About: http://webisa.webdatacommons.org/41802232

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Smog is caused when chemicals including nitrogen oxides react in sunlight, forming ground-level ozone.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com